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  • πŸ“š Local History,
  • πŸ”¨ Engineering,
  • πŸ—ΊοΈ Upper Peninsula,
• 2/3/25

Why This Weird Compass Was Such a Big Deal

Key Topics:

  • William Austin Burt, Michigan surveyor

  • How Michigan was first mapped

  • Why compasses were unreliable in parts of Michigan (iron ranges)

  • How Burt’s solar compass worked

  • How the solar compass made mapping Michigan possible

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How to Ship 800 Billion Pounds of Rock (The Marquette Ore Docks)

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Under Detroit, There’s a Huge, Active Mine (Here's How It Works)

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